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US 12,428,329 B2Granted
Decomposition of gas field chemicals
AssigneeSaudi Arabian Oil Company
InventorsMohamed Ahmed Soliman, Hasan Al Abdulgader, Mohamed Ahmed Saad Mahmoud, Duaa J. Al Saeed, Saba El Sharif
Life of this patent
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Abstract
A system and a method for removing gas field chemicals from a feed stream are provided. An exemplary method includes performing a forward osmosis on a feed stream including gas field chemicals to form a concentrated feed stream, and treating the concentrated feed stream in an electrochemical process to form treated water.
Claims26
A method for removing gas field chemicals from a feed stream, comprising:
- performing a forward osmosis on a feed stream comprising gas field chemicals to form a concentrated feed stream, concentrated in the gas field chemicals, and a dilute draw solution;
- and
- treating the concentrated feed stream in an electrochemical process to form treated water.
A system for removing hydrate inhibitors from produced water, comprising:
- a forward osmosis (FO) unit configured to receive a concentrated draw solution feed, discharge a dilute draw solution effluent, receive a water feed and discharge a concentrated water effluent, wherein the FO unit comprises a semipermeable membrane separating the water feed from the concentrated draw solution feed;
- and
- an electrochemical purification unit to form a treated water effluent from the concentrated water effluent;
- and
- a control system configured to:
- monitor total dissolved solids (TDS) on the water feed and TDS on the concentrated water effluent to determine any ingress of salts across the membrane, and
- adjust a flow rate of the concentrated draw solution feed to the FO unit based on the monitored TDS on the water feed and the TDS on the concentrated water effluent.
4 more elements
Dependencies are inferred from the claim text.